On Node-Red and MQTT
Dependencies: mbed ESP8266Interface MbedJSONValue MQTT JSON
main.cpp
- Committer:
- sbetrabet
- Date:
- 2019-03-08
- Revision:
- 20:568d04eb3d63
- Parent:
- 19:9dfb938f07eb
- Child:
- 21:f08f17225c7c
File content as of revision 20:568d04eb3d63:
#include "MQTTESP8266.h" #include "MQTTClient.h" #include "string.h" #include "MbedJSONValue.h" char buf[100]; MQTTESP8266 ipstack(D1, D0, D10, "Sidsap10","Arduino111"); // change to match your wifi access point float version = 0.47; char* topic = "k64"; char* topic2 = "k64rec"; char* topic3 = "bulb"; char* key2 = "key"; char* hostname = "192.168.43.87"; // Ip int port = 1883; int rc = ipstack.connect(hostname, port); unsigned long previousTime = 0; // will store last time LED was updated // constants won't change: const long interval = 20; MQTT::Client<MQTTESP8266, Countdown> client = MQTT::Client<MQTTESP8266, Countdown>(ipstack); MbedJSONValue demo; int arrivedcount = 0; //using namespace std; std::string my_str; std::string my_str2; std::string someString; std::string clearsky ("clear"); std::string clouds ("few clouds"); std::string snow ("light snow"); int j=0; // callback for subscribe topic void subscribeCallback(MQTT::MessageData& md) { MQTT::Message &message = md.message; printf("Message received: qos %d, retained %d, dup %d, packetid %d\r\n", message.qos, message.retained, message.dup, message.id); printf("%s",(char*)message.payload); printf("\r\n"); printf("Payload %.*s\n", message.payloadlen, (char*)message.payload); printf("nonedited payload is %s and payload is %d\n",(char*)message.payload,message.payloadlen); printf("hey\n"); // int f = int(message.payload); std::string someString((char*)message.payload); someString.resize (message.payloadlen); printf("Edited payload iss %s \n",someString.c_str()); j= someString.find(clouds); printf("j = %d \r\n", j); if ( !(someString.find(clouds)) ) { sprintf(buf, "dCglDR-G9WoQUiig0XMNhOV4ozIEIVu3rWdBh5IlQ7d,cloud %s\n", key2); message.payload = (void*)buf; message.payloadlen = strlen(buf)+1; rc = client.publish(topic3, message); printf("if condition checked, its cloudy\r\n"); } else if ( !(someString.find(clearsky)) ) { sprintf(buf, "dCglDR-G9WoQUiig0XMNhOV4ozIEIVu3rWdBh5IlQ7d,clearsky %s\r\n", key2); message.payload = (void*)buf; message.payloadlen = strlen(buf)+1; rc = client.publish(topic3, message); printf("if condition checked, its clear\r\n"); } else if ( !(someString.find(snow)) ) { sprintf(buf, "dCglDR-G9WoQUiig0XMNhOV4ozIEIVu3rWdBh5IlQ7d,snow %s\r\n",key2); message.payload = (void*)buf; message.payloadlen = strlen(buf)+1; rc = client.publish(topic3, message); printf("if condition checked, its snowy\r\n"); } else { printf("went into else\r\n"); } } int main(int argc, char* argv[]) { wait (1); printf("Starting\r\n"); printf("Version is %f\r\n", version); if (rc != 0) printf("rc from TCP connect is %d\r\n", rc); MQTTPacket_connectData data = MQTTPacket_connectData_initializer; //data.MQTTVersion = 3; //data.clientID.cstring = "mbed-clientID"; //data.username.cstring = "testuser"; //data.password.cstring = "testpassword"; if ((rc = client.connect(data)) != 0) printf("rc from MQTT connect is %d\r\n", rc); if ((rc = client.subscribe(topic2, MQTT::QOS1, subscribeCallback)) != 0) printf("Recv'd from MQTT subscribe is %d\r\n", rc); MQTT::Message message; // QoS 0 time_t seconds = time(NULL); sprintf(buf, "fa02d31610ce9ea0de15b22bb2fe279d, %s\r\n", key2); message.qos = MQTT::QOS0; message.retained = false; message.dup = false; message.payload = (void*)buf; message.payloadlen = strlen(buf)+1; rc = client.publish(topic, message); wait(5); /* sprintf(buf, "dCglDR-G9WoQUiig0XMNhOV4ozIEIVu3rWdBh5IlQ7d, %s\r\n", key2); message.payload = (void*)buf; message.payloadlen = strlen(buf)+1; rc = client.publish(topic2, message); */ while (arrivedcount < 10) client.yield(100); /* // QoS 1 sprintf(buf, "Hello World! QoS 1 message from app version %f\r\n", version); message.qos = MQTT::QOS1; message.payloadlen = strlen(buf)+1; rc = client.publish(topic, message); while (arrivedcount < 10) client.yield(100); // QoS 2 sprintf(buf, "Hello World! QoS 2 message from app version %f\r\n", version); message.qos = MQTT::QOS2; message.payloadlen = strlen(buf)+1; rc = client.publish(topic, message); while (arrivedcount < 3) client.yield(100); // n * QoS 2 for (int i = 1; i <= 10; ++i) { sprintf(buf, "Hello World! QoS 2 message number %d from app version %f\r\n", i, version); message.qos = MQTT::QOS2; message.payloadlen = strlen(buf)+1; rc = client.publish(topic, message); while (arrivedcount < i + 3) client.yield(100); } */ if ((rc = client.unsubscribe(topic)) != 0) printf("rc from unsubscribe was %d\r\n", rc); if ((rc = client.disconnect()) != 0) printf("rc from disconnect was %d\r\n", rc); //ipstack.disconnect(); //printf("Finishing with %d messages received\r\n", arrivedcount); return 0; }